Self-oiling combination pulley-frame and pulley thrust-bearing.



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ALEXANDER CZAJKOWSKI, OAKLAND, CALIFORNIA, ASSIGNOR TO BYRON JACKSON IRON WORKS, OF WEST BERKELEY, CALIFORNIA, A CORPORATION OF CALIFORNIA.

SELF-OILING COMBINATION PULLEY-FRAME AND PULLEY THRUST-BEARING.

Specification of Letters Patent.

Patented Nov. 23, illi.

Application filed .Tune 29, 1914. Serial No. 847,889.

To @Mtv/tom t may concer/n Re it known that I, ALEXANDER CZAJKowsin', a citizen of they United States, residing at Oakland, in the county of Alameda and State of California', have invented'new and useful vImprovements in Self-Oiling Combination Pulley-Frames and Pulley rlhrust-Bearings, of which the following is a specification.

This invention relates to a self-oiling Combination lpulley frame and pulley thrust bearing. and pertains especially to means for the transmission of power toY operate the impellers of centrifugal pumps.

@ne of the objects lof the present inven- 'tion is to provide a pulley which is revolubly mounted on a stationary hollow standard or axle, in such a way as to cause the latter to .entirely take up iall strain exerted upon the pulley without transmitting any of this strain or belt pull to the internal steel shaft connecting tothe pump runners below; the pulley driving the internal steel shaft through al flexible coupling so that the internal steel shaft is subjected to torsional strains only, and receives none of the strainl on the pulley, no matterhow heavy such strain may be. The shaft can, therefore, be made of minimum size, thus i permitting a considerable reduction in the length of the bearings with a consequent reduction in' friction and gain in general eliiciency.

Another object of the`present'invention is .to provide a thrust bearing between the inner shaft and the pulley; and to provide means for automatically lubricating` the several bearing surfaces and revolving parts.

Further objects will hereinafter appear.

The invention consists of the parts and i the construction and combination ofparts v as hereinafter more Afully described and claimed, having reference to the accompanying drawings, in which-u Figure 1 is a side elevation partly in section. Fig. 2 is a cross section on line 2 2, Fig. 1.

A indicates a` pulley frame which is apfprepriately mounted, with respect to the driving power, and provided with a hollow,

non-rotatable hub or standard 2 for the pulley 3. Extending through said hubframe is the centrally disposed drive shaft 4, which, in the case of a centrifugal pump,

carries the'impeller `or impellers, not here shown; the discharge of the pumpbeing l coupling flange 6 by which the shaftI and' pulley are connected to turn in unison through a flexible coupling 7. A cupsh'aped flange 10 is suitably secured, as at 9, on the upper end of the hollow standard, and interposed between the bottom of said flange and the lower side 4of the coupling flange is 'a thrust bearing 11V of suitable construction. rlhe lower cup-shaped flange is not only provided as a seat for the'thrust bearing,but is also adapted'to contain lubricating oil which may be entered through a filling opening` indicated at 12. rlhe-lower end of the hollow standard is similarly provided with an upwardly extending annular flange 13. This' forms an annular channel around the hollow standard in which the bearings' of the pulley are mounted. This annular channel is also provided as an oil container and this is filled through the connections .indicated at 14.

The inner shaft 4, which may be connected with the runners of a deep well pump, or any other suitable mechanism, may be guided by bearings 15. Thesebearings are, however, in the present instance relieved from all side strain, due to belt pull, as this strain is in the present instance entirely taken up by the hollow standard 2. The flexible coupling 7 forms a connection between shaft 4 and the pulley by which a revolving movement is transmitted from one to the other and no matter how heavy the strain on the pulley may be, duerto belt pull, such strain can never be transmitted to the inner shaft, and it, therefore, can be made of minimum size, accomplishing a reduction in friction anda corresponding increase in eiiiciency. The ar rangement of the thrust bearing, together' `with the arrangement of the annular flanges 10l and 13, permits. these bearings to be completely submerged ip the lubricatingioil which cannot leak or escape, as no stuffing boxes are provided.

Groovesl, formed on the exterior' surf niersed at all times. A perfect automatic lubricating system is thus secured, together With simplicity of construction and arrangement.

The materials and finish and the arrange ment of the several parts are such as the experience and judgment of the 1nanufacturer may dictate.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. A combination self-oiling pulley frame and thrust bearing for drive shafts, consisting in the combination of a stationary hollow axle, a drive shaft extending therethrough, said axle being' provided with an external annular cup flange open at the top and forming an oil reservoir, a pulley on the axle having a hub running in the oil reservoir, a cap Hanne secured to the axle and extending over the openend of the cup 'flange secured to the shaft and connected to the pulley, and thrust bearings between the last mentioned flange and the said cap iiange.

2. The combination of a stationary, hollow axle provided with' an external annular oil reservoir, a pulley revolubly mounted on said axle and having` an internal hub ruw ning in said reservoir, a drive shaft extendin g` through said axle, and a icxibleconnection between said pulley and said shaft, whereby said axle is caused to take up all strain exerted upon said pulley.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.-

ALEXANDER CZAJKOlVSKI.

Witnesses t E. L. OsoRN, H. J. ELLEN. 

